systemd: fix creation of user service unit files (#2867)

* systemd: fix creation of user service unit files

* helix: fix failing test due to file output format change

Co-authored-by: Nicolas Berbiche <nicolas@normie.dev>

modules/systemd.nix

@@ -41,7 +41,7 @@ let
       source = pkgs.writeTextFile {
         name = pathSafeName;
         text = toSystemdIni serviceCfg;
-        destination = lib.escapeShellArg "/${filename}";
+        destination = "/${filename}";
       } + "/${filename}";
 
       wantedBy = target: {

tests/modules/programs/helix/settings-expected.toml

@@ -1,7 +1,4 @@
 theme = "base16"
-
-[keys]
-[keys.normal]
 [keys.normal.space]
 q = ":q"
 space = "file_picker"